Finding the Fourth Proportional to 472,905.70, 709,358.55 and 465,129.70
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Solution
The fourth proportional to 472,905.70, 709,358.55 and 465,129.70 is: 697,694.55
Step by Step Solution
- Step 1: Write the proportion equation
472,905.70 : 709,358.55 = 465,129.70 : x - Step 2: Convert to fraction form
472,905.70/709,358.55 = 465,129.70/x - Step 3: Cross multiply
472,905.70x = 709,358.55 × 465,129.70 - Step 4: Simplify right side
472,905.70x = 329,943,729,553.94 - Step 5: Solve for x
x = 329,943,729,553.94/472,905.70 - Step 6: Final answer
x = 697,694.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.